I purchased an old 1/32 Revell Tomcat on Ebay for $15. The Revell kit, although not as detailed as the Tamiya kit, is a great kit for the money considering the Tamiya 1/32 kit is anywhere from $70-$120 and the front fuselage has raised panel lines, where as the Revell kit has recessed panel lines.
The main flaws of the revell kit, especially on the early 1981 version, are the engine nozzels and the cockpit. I plan on using resin ejection seats from Teknics, and a set of nozzels from the Tamiya f-14A kit. I will also replace the kit decals with those from CAM.
For references I'm using the "F-14 Walk Around" book from Squadron/Signal, and various pictures from the internet and other print publications.